Did you know that hair is made of 90% protein? Daily damage strips this protein away, leading to weakened hair that is more prone to breakage. That’s why Dove Bond Strength + Biotin Conditioner is formulated with patented Bio-Protein Care technology. The technology delivers 1 trillion molecules of a key amino acid, the same amino acid that makes up the protein most lost due to damage. This helps repair the hair from the inside, leaving hair stronger, smoother and healthier-looking with every wash. Enjoy stronger hair and up to 25x less breakage*. *When using Dove Bond Strength + Biotin Shampoo and Conditioner vs non-conditioning shampoo. - Get up to 25x less breakage when using Dove Damage Therapy Bond Strength + Biotin Conditioner - Designed to strengthen weakened hair prone to breakage - Features Bio-Protein Care technology - Protects, repairs and restores hair to reduce signs of damage - PETA-Approved Vegan - We do not test on animals anywhere in the world